diff options
| author |   Wei Wang <weiwan@google.com> | 2019-01-25 10:53:19 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-01-27 13:29:43 -0800 |
| commit | 31954cd8bb667030b1c0d3d77f28fe71f06999f9 (patch) | |
| tree | f00b43f2669ac70db625d8babe06e89cd0a731e2 /include | |
| parent | net: ipv4: ip_input: fix blank line coding style issues (diff) | |
| download | linux-dev-31954cd8bb667030b1c0d3d77f28fe71f06999f9.tar.xz linux-dev-31954cd8bb667030b1c0d3d77f28fe71f06999f9.zip | |
tcp: Refactor pingpong code
Instead of using pingpong as a single bit information, we refactor the
code to treat it as a counter. When interactive session is detected,
we set pingpong count to TCP_PINGPONG_THRESH. And when pingpong count
is >= TCP_PINGPONG_THRESH, we consider the session in pingpong mode.
This patch is a pure refactor and sets foundation for the next patch.
This patch itself does not change any pingpong logic.
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_connection_sock.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h index fe0d9b44d6fc..179609d1d1ea 100644 --- a/include/net/inet_connection_sock.h +++ b/include/net/inet_connection_sock.h @@ -314,4 +314,21 @@ int inet_csk_compat_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen); struct dst_entry *inet_csk_update_pmtu(struct sock *sk, u32 mtu); + +#define TCP_PINGPONG_THRESH 1 + +static inline void inet_csk_enter_pingpong_mode(struct sock *sk) +{ + inet_csk(sk)->icsk_ack.pingpong = TCP_PINGPONG_THRESH; +} + +static inline void inet_csk_exit_pingpong_mode(struct sock *sk) +{ + inet_csk(sk)->icsk_ack.pingpong = 0; +} + +static inline bool inet_csk_in_pingpong_mode(struct sock *sk) +{ + return inet_csk(sk)->icsk_ack.pingpong >= TCP_PINGPONG_THRESH; +} #endif /* _INET_CONNECTION_SOCK_H */ |